Average of 10 numbers 2580. If average of 6 is 2575, average of remaining 4? MCQ with Answer and Explanation

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Average of 10 numbers 2580. If average of 6 is 2575, average of remaining 4?

A. 2590

B. 2586

C. 2587.5

D. 2585

Answer: Option C

Solution (By JKExamLibrary)

Sum10=25800. Sum6=15450. Remaining=10350. Average=2587.5.

This question belongs to: Maths Average

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Question #1

Average of 16 numbers 25. If 4 numbers average 30, average of remaining 12?

A. 25

B. 22

C. 23.33

D. 24

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Correct Answer: Option C

Explanation:
Sum16=400. Sum4=120. Remaining=280/12≈23.33.

This question belongs to: Maths Average

Question #2

Average of 15 numbers 560. If average of 9 is 555, average of remaining 6?

A. 568

B. 570

C. 567.5

D. 565

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Correct Answer: Option C

Explanation:
Sum15=8400. Sum9=4995. Remaining=3405. Average=567.5.

This question belongs to: Maths Average

Question #3

Average of 3 numbers is 25. If two average 20, third is

A. 35

B. 25

C. 40

D. 30

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Correct Answer: Option A

Explanation:
Third =75 -40=35.

This question belongs to: Maths Average

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